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Table 7 Linear mixed-effect models to predict the nutrient amounts (% initial amount) of Fagus sylvatica, Picea abies and Pinus sylvestris

From: Nutrient retention and release in coarse woody debris of three important central European tree species and the use of NIRS to determine deadwood chemical properties

  C lnN sqrtP lnS lnCa lnK lnMg lnMn
Conditional R2 74.3 28.6 30.1 65.3 44.3 63 85.8 60.6
Marginal R2 65.8 23.7 26.7 62.8 22.8 47.1 11.7 37.4
Random factor 8.46 4.94 3.43 2.5 21.4 16 74.1 23.2
Decomptime – – –36.4   2.55 2.57   – – –21.6   
Spec 2.38 – –4.97 – – –6.47 – – –21.5 – –15.8    
Diam +++ 21.1    – –3.08 + 7.08 ++ 5.43 + 1.8 +++ 15.9
Decomptime:Spec +++ 5.91 +++ 18.7 +++ 13.2 +++ 27   +++ 20   – – –21.4
Spec:Diam    – –4.42 – – –11.2    +++ 9.86  
  1. Values are Eta squared with direction of effect (increase (+) or decrease (−)) according to significance level (0: ‘***’, 0.001: ‘**’, 0.01: ‘*’ and 0.05: ‘.’)